Mechanical Properties of Similar Materials Simulating Weak Surrounding Rocks with Different Ratios of Fine-to-Coarse Aggregate
文献类型：期刊论文
| 作者 | Cui, Lan2,3; Sheng, Qian2,3; Miao, Chenxi1; Luo, Si1,3 |
| 刊名 | APPLIED SCIENCES-BASEL
 |
| 出版日期 | 2025-03-24 |
| 卷号 | 15期号:7页码:20 |
| 关键词 | fine and coarse aggregate similar material weak surrounding rock mechanical property microscopic perspective |
| DOI | 10.3390/app15073540 |
| 英文摘要 | The purpose of the study is to provide an optimum RFCA for similar materials simulating weak surrounding rock and to present a convenient and efficient numerical method to determine the optimum ratio of fine-to-coarse aggregate (RFCA) in geo-mechanical model tests. The selection and proportion of aggregates in similar materials significantly affect the mechanical properties of the materials, thereby influencing the results of experiments. Current studies have different opinions on the relationship between the aggregate ratio and the behaviour of similar materials. In comparison to time-consuming, repetitive proportioning tests, discrete element analysis is a convenient method, as most current analyses focus on either highly cohesive materials or non-cohesive materials, ignoring weakly cohesive materials such as similar materials simulating weak surrounding rock. In order to solve this, in this study, several specimens with different RFCAs were created to simulate weak surrounding rock. Uniaxial compression tests were conducted on these specimens, which were simulated by discrete element analysis. Some key parameters were calibrated by comparing the results from the discrete element analysis and the compression tests. Based on the calibrated parameters, the effect of RFCAs on the mechanical properties of similar materials was investigated. Mathematical relationships between the RFCAs and mechanical properties, such as elastic modulus, cohesion, and internal friction angle, were proposed. The variations in particle contact forces and crack propagation patterns in similar materials with different RFCAs were discussed from a microscopic perspective. |
| 资助项目 | National Science Foundation of China ; [52279118] ; [U21A20159] |
| WOS研究方向 | Chemistry ; Engineering ; Materials Science ; Physics |
| 语种 | 英语 |
| WOS记录号 | WOS:001463690200001 |
| 出版者 | MDPI |
| 源URL | [http://119.78.100.198/handle/2S6PX9GI/35605]  |
| 专题 | 中科院武汉岩土力学所 |
| 通讯作者 | Cui, Lan |
| 作者单位 | 1.Taiyuan Univ Technol, Coll Civil Engn, Taiyuan 030024, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 3.Chinese Acad Sci, Inst Rock & Soil Mech, State Key Lab Geomech & Geotech Engn, Wuhan 430071, Peoples R China |
| 推荐引用方式 GB/T 7714 | Cui, Lan,Sheng, Qian,Miao, Chenxi,et al. Mechanical Properties of Similar Materials Simulating Weak Surrounding Rocks with Different Ratios of Fine-to-Coarse Aggregate[J]. APPLIED SCIENCES-BASEL,2025,15(7):20. |
| APA | Cui, Lan,Sheng, Qian,Miao, Chenxi,&Luo, Si.(2025).Mechanical Properties of Similar Materials Simulating Weak Surrounding Rocks with Different Ratios of Fine-to-Coarse Aggregate.APPLIED SCIENCES-BASEL,15(7),20. |
| MLA | Cui, Lan,et al."Mechanical Properties of Similar Materials Simulating Weak Surrounding Rocks with Different Ratios of Fine-to-Coarse Aggregate".APPLIED SCIENCES-BASEL 15.7(2025):20. |
入库方式： OAI收割
来源：武汉岩土力学研究所
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